Membrane Keypad Film for 6AV6 641-0CA01-0AX1 (Siemens OP77B)

1. Basic Identification

• Matching HMI Model: 6AV6 641-0CA01-0AX1 (SIMATIC OP77B 4.5" Operator Panel)
• Part Name: Membrane Keypad Film / Keyboard Overlay / Button Film
• Product Type: Industrial PET membrane switch keypad with printed graphic overlay
• Lifecycle: OP77B main unit discontinued; this keypad film is aftermarket replacement spare part
•  

• 2. Physical & Material Specifications
  
  

  Material Structure

  1. Top graphic layer: Matte anti-scratch PET film, oil & chemical resistant
  2. Upper conductive circuit layer: Silver carbon printed circuit
  3. Spacer insulation layer: Double-sided adhesive PET spacer
  4. Bottom conductive circuit layer: Contact switch circuit
  5. Adhesive backing: 3M industrial double-sided adhesive for front panel mounting

  Mechanical Parameters

  • Overall outline size: 102 mm (W) × 61 mm (H)
  • Total thickness: 0.28 mm
  • Weight: ~48g
  • Key layout total: 31 keys
    • 8 configurable function keys (4 with LED backlight window)
    • 23 system navigation & numeric keys
    • Complete numeric / alphanumeric / hex input matrix
  • Key actuation force: 120–180 gf standard industrial tactile feedback
  • Service life: ≥1,000,000 presses per single key
  • IP Rating: Cooperates with panel gasket to achieve front IP65 (dustproof, splash-proof)

  Environmental Resistance

  • Operating temperature: -20℃ ~ +60℃
  • Storage temperature: -30℃ ~ +70℃
  • Resistance: Industrial oil, coolant, weak acid/alkali, common workshop detergents
  • Anti-UV, anti-fade printing, no label peeling under long factory runtime

  3. Electrical Interface Specs

  • Connection: Integrated flat FPC flexible cable, direct plug-in to OP77B mainboard keypad socket
  • Working voltage: 3.3V DC signal scan circuit
  • Insulation resistance: ≥100MΩ between circuits
  • Contact resistance: 10–30Ω when key pressed; open circuit >100MΩ standby